The article previously described both the top-down and bottom-up scenarios, which primarily focus on green-field development.

本文已经介绍了自上而下和自下而上式场景，它们主要侧重于全新的开发。

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"Dongtan" may be a template for future urban design in green field development, but definitely not a solution to the existing urban problems confronted with China.

“东滩”也许是未来绿色城市的一个设计模板，但绝不是中国城市目前面临的众多问题的解决办法。

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Emery Planning said the development of green-field sites was necessary.

BBC: Alsager protest

The objectors to the Wellington Road plan had raised concerns over the scale of the development and the fact it is a green-field site.

BBC: Plans for more than 300 homes in Newport approved